Fruit-fly circuit reveals how a short-term navigational memory is gated
Published in Brain Activity, Brain/Neurology, Journals, Memory.
Published October 11, 2026. A fruit-fly study published in Nature on October 7 identifies a circuit that helps retain a navigational goal briefly after an odor disappears.
NYU Langone researchers observed flies moving toward apple-cider-vinegar odor and continuing for a few seconds after it was removed. Brain recordings implicated two neuron types, PFG and hΔK, in maintaining the directional signal.
The researchers describe a split attractor network. PFG neurons receive orientation information from the fly’s internal compass. A gate controls communication with hΔK neurons; opening it allows the circuit to stabilize a particular goal. Separating the directional information from the timing of memory formation offers a mechanism for both rapid updates and temporary stability.
Scope: This is basic research on fly navigation and working memory. It does not demonstrate the same circuit in humans or a treatment for memory disorders.
Sources: Original Nature paper; NYU Langone announcement, October 7, 2026.